*{
    margin: 0;
    padding: 0;
}
body{
    width: 100%;
    height: 1000px;
    overflow:scroll;

}
.a{
    width: 100%;
    height: 50px;
    background-color: red;
    color: white;
    position: fixed;
    left: 0;
    top: 0;
   /* position: relative;*/


}
.a .a1 img{
    margin: 15px 0px 15px 15px;
    width: 22px;
    height: 22px;
   /* position: absolute;
    left: 2px;
    top: 8px;*/
}
.a2 input{
    padding-top: 2px;
    height: 40px;
    width: 70%;
    position: absolute;
    top: 10%;
    left: 11%;

    border-radius: 50px;
}

.a .a3{
    width:40px ;
    height: 22px;
    background-color: #ff1437;
    position: absolute;
    top: 15px;
    right: 2px;
}

.a .a4 img{
    width: 22px;
    height: 22px;
    position: absolute;
    top: 32%;
    left: 16%;

}




.foot .b{
    width: 100%;
    height: 83px;
    background-color: #ffffdf;
   text-align: center;
    position: fixed;
    bottom: 0px;
    left: 0px;
    display: flex;
    flex-direction:row ;
    flex-wrap: nowrap;/*不要换行*/
    justify-content: space-around;/*??????*/

}
.foot .item{
    font-size: 11px;
    line-height: 100px;/*字体居中对齐*/
    display: inline-block;
    flex-grow: 1;/*平均分部*/


}
.foot .b .b1 img{
    width: 26px;
    height: 26px;
    position: absolute;
    left: 7%;
    top: 11%;
}
.foot .b .b2 img{
    width: 26px;
    height: 26px;
    position: absolute;
    left: 27%;
    top: 11%;
}
.foot .b .b3 img{
    width: 26px;
    height: 26px;
    position: absolute;
    left: 47%;
    top: 11%;
}

.foot .b .b4 img{
    width: 26px;
    height: 26px;
    position: absolute;
    left: 67%;
    top: 11%;
}
.foot .b .b5 img{
    width: 26px;
    height: 26px;
    position: absolute;
    left: 87%;
    top: 11%;
}